This paper presents a radio-frequency (RF) antenna as sensor to detect Horseradish peroxidase (HRP). At the core of proposed approach is graphene film deposited on stub connected an RF antenna. The doctor bladed stub. then properly chemically functionalized in order presence We validate proof-of-concept operation HRP concentration detection by measuring frequency shift reflection coefficient us...

1. Introduction Leaky-wave antennas based on an open-waveguide structure without partly physical cut become a candidate of millimeter-wave antennas because asymmetry of the structure can easily produce a radiation along its length due to a leaky mode. One of these open waveguides for antenna purposes is the stub-loaded ridge-rectangular waveguide, which consists of a ridge-rectangular waveguide...

Interconnection across administrative boundaries prompts the need for comprehensive policy enforcement (i.e., access control) with respect to inter-domain packet traac. Due to the nature of the communication services they provide, stub and transit domains require diierent mechanisms for policing inter-domain traac. This paper addresses the design of a policy enforcement mechanism geared speciic...

This paper introduces a design method of simple bandpass (BP) negative group delay (NGD) topology. The fundamental specifications BP NGD function are defined. passive topology consists parallel resistance associated with an open-ended microstrip stub. properties and characterization respect to the constituting stub parameters established. validations performed theoretical calculated simulated G...

In this article, a printed series fed tri-slot coplanar Vivaldi antenna is studied and investigated for RADAR application. The consists of three exponentially tapered slots excited by single microstrip line. are simultaneously with radial stub on the feed line impedance matching. proposed covers frequency 7.8-11.8 GHz at −10 dB bandwidth. gain varies from 7.5 lowest operating increases to aroun...

Careful design, modeling and simulation of modern high speed circuits is a vital issue in today’s electronic industry. High speed data transfer, and high processing power are accomplished if the circuit of the high speed net was modeled and designed properly. We present the main modeling techniques for both high speed circuits and interconnects used in industry nowadays. A modeling example of a...

This paper presents a linear-to-dual-circular polarization metasurface decomposer, which decomposes linearly polarized (LP) planar incident wave into pair of circular (CP) waves, namely, right-handed (RHCP) and left-handed (LHCP) wave, scatters them different directions. The proposed decomposer is composed series rotated trimming stub loaded patches. two CP components are excited due to the per...

Galactosamine was found consistently as a minor component of the envelope of five species of slow-growing mycobacteria, including all the major human pathogens, but not three rapid-growing species. The amino sugar was a component of the arabinogalactan of the cell wall skeleton, and occurred at the level of about one residue per arabinogalactan chain. Its amino group was in the free, un-N-acety...